For vehicles over 4.5 tonne gross vehicle mass (GVM) the registration is effective for 12, 6 or 3 months as chosen by the registered operator. For vehicles 4.5 tonne gross vehicle mass or under, the registration is effective for 12 or 6 months as chosen by the registered operator. You will receive a renewal notice before the expiry of your current registration period. However, if you do not receive a renewal notice the non-receipt of the notice does not affect the expiry of the vehicles registration or your obligation to renew it before it expires, if you intend to use the vehicle on a road after the existing registration expires. When the registration period selected is less than 12 months, a surcharge applies to cover the cost of the additional updating of the vehicle register and other costs associated with the production, manufacture and mailing of the additional registration renewal notice, certificate and label. If the payment submitted is less than the fee required, the number of days for which the vehicle is registered is amended to cover the shortfall in payment.